<template>
  <el-breadcrumb class="app-breadcrumb" separator="/">
    <!-- <transition-group name="breadcrumb"> -->
      <el-breadcrumb-item v-for="(item,index) in levelList" :key="item.path">
        <span v-if="item.redirect==='noRedirect'||index==levelList.length-1" class="no-redirect">{{ item.meta.title }}</span>
        <a v-else>{{ item.meta.title }}</a>
      </el-breadcrumb-item>
    <!-- </transition-group> -->
  </el-breadcrumb>
</template>

<script setup>
  const route = useRoute()
  const levelList = ref([])


  watch(() => route.path,(newRoute)=> {
    // console.log(newRoute);
    if (route.path.startsWith('/redirect/')) {
      return
    }
    getBreadcrumb()
  })

  onMounted(() => {
    getBreadcrumb()
  })

  const getBreadcrumb = () => {
    let matched = route.matched.filter(item => item.meta && item.meta.title)
    const first = matched[0]
    if (!isDashboard(first)) {
      matched = [{ path: '/', meta: { title: '' }}].concat(matched)
    }
    levelList.value = matched.filter(item => item.meta && item.meta.title && item.meta.breadcrumb !== false)
  }

  const  isDashboard = (route) => {
    const name = route && route.name
    if (!name) {
      return false
    }
    return name.trim().toLocaleLowerCase() === ''.toLocaleLowerCase()
  }
</script>

<style lang="scss" scoped>
.app-breadcrumb.el-breadcrumb {
  display: inline-block;
  font-size: 14px;
  // line-height: 27px;
  margin: 0 0 10px 0;

  .no-redirect {
    cursor: text;
    color: #333;
  }
}
</style>
